November 2016

Problem 446 - Compound Truss Formed Into Three-Hinged Arch

Problem 446
A three-hinged arch is composed of two trusses hinged together at D in Figure P-446. Compute the components of the reaction at A and find the forces acting in bars AB and AC.
 

446-compound-truss.gif

 

Advanced Engineering Mathematics: Solve for: [z1^(4cos z4)]/log(sub z1)z3

Submitted by agentcollins on November 15, 2016 - 3:09am

z1= 4^(e^[(-i)(π/4)])
z2= -5i
z3= 3√3<30°

Note: < is the angle sign. I don't have symbol for.the angle sign in my keyboard.

Solve for:
[z1^(4cos z4)]/log(sub z1)z3

Please help :(

Problem 447 - Compound Truss Formed Into Three-Hinged Arch

Problem 447
The truss are joined as shown in Figure P-447 to form a three-hinged arch. Determine the horizontal and vertical components of the hinge force at B and then determine the type and magnitude of force in bars BD and BE.
 

447-compound-truss.gif

 

ngcobo bh's picture

truss: simply supported right-angle triangle truss

Submitted by ngcobo bh on November 15, 2016 - 9:56am

A simple supported right-angle triangle truss of 1/2( 5 x 12 ) meter square, is subjected with 50KN and 25KN at the mid-span and top end of the truss respectively. The truss is having two internal members one acting horizontal at the mid-span and the other acting diagonal from support A to joint at a point on the slanted side of right angle triangle.
Taking into account that the pined support is on the right and the roller on the left.
You are required to check the determinant and compute the reactions of this truss.

Problem 448 - Beam of Three Segments Joined by Internal Hinges

Problem 448
A beam carrying the loads shown in Figure P-448 is composed of three segments. It is supported by four vertical reactions and joined by two frictionless hinges. Determine the values of the reactions.
 

448-beam-with-internal-hinges.gif

 

Problem 449 - Reactions at the Supports of a Bridge

Problem 449
The bridge shown in Figure P-449 consists of two end sections, each weighing 20 tons with center of gravity at G, hinged to a uniform center span weighing 12 tons. Compute the reactions at A, B, E, and F.
 

449-massive-bridge.gif

 

Noufiya Rasheed's picture

What are the Roots of the Original Quadratic Equation

Submitted by Noufiya Rasheed on November 17, 2016 - 1:49pm

In copying a second degree equation, a student mistakenly wrote the constant term as 6 instead of -6. His answers were -2 and -3. What are the answers to the original equation?

Greg Flores Ibag Greg's picture

SOLID GEOMETRY: fly stationed at a point on the circumference of the base of a cylindrical tower

Submitted by Greg Flores Iba... on November 17, 2016 - 4:39pm

a fly stationed at a point on the circumference of the base of a cylindrical tower of radius 12 feet. Find that he can just see a distant flagstaff by walking along the tangent line to the base either a distance 8 feet in one direction or a distance 5 feet in the other direction. Find the distance of the foot of the flagstaff from the center of the base of the tower

Problem 450 - Reactions at Hinge Support of the Frame Holding

Problem 450
The billboard BC weighing 1000 lb is subjected to a wind pressure of 300 lb/ft as shown in Figure P-450. Neglecting the weights of the support-members, determine the component of the hinge forces at A and F.
 

450-billboard.gif

 

Need help: saan makakahanap ng mga problems sa Differential equation

Submitted by Exudes on November 21, 2016 - 6:14pm

Pwedi po patulong kung saan makakahanap ng mga problems sa Differential equation, yung maraming problems kasi gusto kung mag practice sana from easy, medium hangang hard po na mga problems.

Problem 451 - Components of Hinge Forces of a Frame

Problem 451
The frame shown in Figure P-451 is hinged at E and roller supported at A. Determine the horizontal and vertical components of the hinge forces at B, C, and D. Neglect the weights of the members.
 

451-frame-structure.gif

 

Problem 452 - Weight Supported by a Cable Which Runs Over a Frictionless Pulley

Problem 452
For the frame shown in Figure P-452, determine the horizontal and vertical components of the hinge force at B as it acts upon member AC.
 

452-frame-with-pulley.gif

 

Engineering Mehcanics - Friction

Submitted by salveamigos123 on November 24, 2016 - 4:41am

Hello,
I am writing because I have a problem that I can not solve.
I would be thankul if someone could help me solve this problem.

The problem is as follows:

Problem 453 - Analysis of A-frame with Weightless Cylinder

Problem 453
For the frame shown in Figure P-453, determine the resultant hinge forces at B, C, and E.
 

453-a-frame-with-cylinder.gif

 

MiniG's picture

Present worth from monthly payment with interest rate compunded quarterly

Submitted by MiniG on November 30, 2016 - 6:56pm

Given the monthly payment for a land loan is 1110. The bank charge 6% interest compunded quarterly for 30 years. What is the price of the land?

*is the concept correct if I first convert 6% to the effective annual rate which it will be 6.14%. Then, dividing it by 12, with the period of 360 (30 x 12).So, the equation will be P=1110(P/A, 0.51%,360). ?

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